10l (segfault fix)

Originally committed as revision 4341 to svn://svn.ffmpeg.org/ffmpeg/trunk
20 years ago · 0f0680c553
parent 84adb95ac2
commit 0f0680c553
1 changed files with 2 additions and 1 deletions
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@ -272,7 +272,8 @@ static void fill_buffer(ByteIOContext *s)
        return;

    if(s->update_checksum){
-        s->checksum= s->update_checksum(s->checksum, s->checksum_ptr, s->buf_end - s->checksum_ptr);
+        if(s->buf_end > s->checksum_ptr)
+            s->checksum= s->update_checksum(s->checksum, s->checksum_ptr, s->buf_end - s->checksum_ptr);
        s->checksum_ptr= s->buffer;
    }